File.



No. 858,171. PATENTED JUNE 25. 1907.

. H. GBTAZ.

PILE. y APPLIUATIN FILED AUG. 21, 1906.

. 2 SHEETS-SHEET 1.

@fr Egfr 227x/ Zrfx T725 W/ TNE SSE S MOU.- mM/@L- 5%@ HENRY GETAZ, OFSCHENECTADY, NEW YORK.

FILE.

Specicaton of Letters Patent.

Patented J une 25, 1907.

Application filed August 21.1906. Serial No. 331.490.

To @ZZ when?, t may concern:

Be it known that l, HENRY GETAZ, a citi- Zen of the Republic ofSwitzerland, and a resident of Schenectady, in the county of Schenectadyand State of New York, have invented a new and Improved File, of whichthe following is a full, clear, and exact description.

` This invention is an improvement in files relating to that class offiles in which the teeth are composed of a series of cutting bladesclamped together in an angular relation and adapted to be readilysharpened when dulled.

The object of the invention is to improve the iiles of this charactergenerally, especially in the matter of providing for the delection ofthe cutting blades in an eective manner.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a plan view of the file when completely assembled and readyfor use; Fig. 2 is an inverted plan view of Fig. 1; Fig. 3 is a sideelevation of the file; Fig. 4 is a rear end elevation of the file Fig. 5is a front end elevation of the iile; Fig. 6 is an inside view of one ofthe locking plates; Fig. 7 is a top edge view of the same; Fig. 8 is anend view of one of the locking plates with a deflecting plate heldtherein and showing in dotted outline`the position of the core of theiile when the cutting blades or plates thereof are in angular position;Fig. 9 is a side elevation of Fig. 8; Figs. 10 to 14 inclusive aresectional views through the iile showing the core in section and theposition assumed by its two members when the cutting blades arerespectively at right angles thereto, and in different angular positionsas when the file is in use; Figs. 15 to 19 inclusive are respectivelyplan views of Figs. l0 to 14; Fig. 20 is a plan view of a detail ofconstruction; Fig. 21 is a transverse section on the line 21--21 of Fig.20 Fig. 22 is a plan view of one member of the core Fig. 23 is a similarview of the other elements of the core; Fig. 24 is a transverse sectionon the line 24-24 of Fig. 22; Fig. 25 is a section on the line 25-25 ofFig. 23; Fig. 26 is a plan view of the improved file assembled with amodified form of locking plate, said elevation corresponding to Fig. 1;Fig. 27 is a iront end view of Fig. 26; Fig. 28 is a plan view of thelocking plate shown in Fig.

cut away as clearly shown.

26; Fig. 29 is a side elevation of one ofthe deilecting plates employedin connection with the locking plate shown in Fig. 28; Fig. 3Q is anelevation showing the locking plate shown in Fig. 28 and deflectingplate in Fig. 29 in assembled relation, and Fig. 31 is a plan View of awasher employed in connection with the construction shown in Fig. 26.

Referring more especially to the iile shown in Figs. 1 to 25 inclusive,the numerals 1 and 2 indicate respectively the elements of a coreemployed in the construction of the iile, the element 1 being made as anintegral partof the shank of the iile, which is screw-threaded as at 3at its forward end, the oppositeand outer end 4 of the element 1, asalso that portion adjacent to the`screw thread 3, being left square fora purpose hereinafter made apparent.

As best shown in Figs. 10 to 14 inclusive, the core ofthe iilecomprising the elements 1 and 2 when placed together, is a substantialsquare divided on one of its diagonals, the acute angles of each of theelements being It is thus seen by this construction that on sliding theelements of the core transversely of each other, the dimensions of thecore will increase in one direction and bel contracted in the oppositedirection. A series of plates 5 of thin, hardened sheet steel, havingsquare apertures 6 slightly larger than the corewhen the latter is insquare formation, are slipped over the core and prevented Jfrom slidingover its forward end by reason of the head of a bolt 7 and a nut 8threaded thereon, the bolt passing through either of the apertures 9 or9a in the squared portion 4.

A series of locking plates 10 of substantially Z-shape shown in detailin Figs. 6 to 9 inclusive, are provided on their inner faces withinclined intersecting slots 11 and slots 12 in one end. The slots 11 arefor receiving the ends of a plurality of deilecting plates 13substantially U-shape, one deflecting plate being provided for each ofthe clamping plates and held in one of the slots 11 by a set screw 14.After the cutting blades have been passed over the core and a deflectingplate secured to each of the clamping lates in the corresponding slots11 of the atter, the deflecting plates are passed over to straddle thecore at substantially equal distances apart, lea ving the locking plateson top thereof, as shown in Fig. 1. Set screws 14a are then passedthrough the slots 12 of the lock- IOO IOS

IIC

ing plates and threaded into the next adjacent plate, operating to setthe deflecting plates at the angle desired for the cutting blades. AU-shaped collar 15, having a pointed nose a is then placed astride theshank of the tool adjacent to the cutting blades after suitable washershave been placed therebetween, and a nut 16 applied to the thread 3 usedin forcing the cutting blades tightly together, causing them to turn atthe angle of the dellecting plates and the elements of the core slidingon each other to iill the apertures in the cutting blades when in thisangular position. After the nut 16 has been screwed in place, a setscrew 17 -at one side of the collar 15 is tightened to securely hold thecollar in place.

As shown in Figs. 2 and 3, the washers inserted intermediate the bolt 7and the cutting blades bear on the nut and bolt head, the bolt beingfreely rotatable in order that the head and nut may readily assume anangle corresponding to that of the dellecting plates. When the cuttingblades have been clamped in the angular position shown in Fig. 1, theside face can be dressed olf on an emery-Wheel, grind-stone or the likeforming teeth at this face of the file on the cutting blades when theyare turned in an opposite angular relation. It is thus apparent thatwhen the blades are turned at an angle to form teeth on one face, anadjacent face is a smooth, plain surface. The grinding of the cuttingblades on all the faces can be continued by securing the locking platesand 4their attached dellecting plates at different sides of the file,which act to turn the plates in the several angular positionsillustrated in Figs.l 16 to 19 inclusive. It is also possible to changethe angle of deflection of the blades by removing the deflecting platesfrom the slots 11 in the clamping plates, and replacing them in theslots in the clamping plates at an angle thereto shown in Fig. 6. W'henthe cutting blades have become worn to such an extent that they cannotbe further ground, they are removed and new ones substituted in theirplace. i

In Figs. 25 to 31 inclusive is shown a modification in all respectsalike to the construction just described except the clamping plates 18are of diamond-shape and are notched at each side for receiving theprojections 19 extending from the U-shaped deflecting plate 13a. Awasher 20 having a projection 21 from one face, is placed at each end ofthe file when the cutting blades are assembled, the projections actingas a stop for the diamond-shaped locking plates. As shown in Fig. 26,when the cutting blades have been clamped together, the adjacent edgesof the locking plates contact with each other and rigidly hold theblades at the desired angle.

Although I have described the invention in detail, it is to beunderstood that the precise embodiment thereof is not material providedits essential characteristics are employed as pointed out in the annexedclaims.

Having thus described my invention I claim as new and desire to secureby Letters Patent:

1. A lile having teeth composed of a series of cutting blades removablyheld together, deilecting plates placed at predetermined points betweenthe blades, and locking plates secured to the deflecting plates and toeach other to regulate the angle at which the cutting blades are turned.

2. A file comprising a divided core of two members, a series ofapertured cutting blades composing the file teeth assembled on the core,and means associated with the blades to regulate the angle at which theyare turned, said means causing the members of the core to slidetransversely upon each other and contact at all sides of the aperturesin the blades.

3. A file having a core diagonally divided, a series of aperturedcutting blades adapted to be passed over the core and held thereon in anangular relation, and means associated with the cutting blades toregulate the angle at which they are held, said means comprising asystem of deflecting plates arranged at suitable points between theblades and locking plates attached to the deilecting plates at one sideof the blade.

il. A lile comprising a core diagonally divided, a series of aperturedcutting blades adapted to be clamped thereon in angular relation, aplurality of deflecting plates inserted between the blades atpredetermined points, and means in fixed relation to the deflectingplates to regulate the angle thereof as described.

5. A file comprising a core, a series of cutting blades forming theteeth of the. iile adapted to be removably attached to the core, and aseries of deflecting plates arranged between the blades having means toregulate the angle at which the cutting blades are secured.

6. A file comprising a core of two members of substantially triangularsection adapted to transversely slide upon each other, and a series ofapertured cutting blades adapted to be passed over the core and held inan angular position thereto, whereby the members of the core slide uponeach other, contacting at all sides of the apertures in the blades.

7. A file comprising a core composed of two members of substantiallyright angle triangular section, a plurality of cutting blades havingsquare apertures adapted to be passed over the core, and means forforcing the blades in an angular position whereby the members of thecore slide upon each other and contact at all sides of the apertures inthe blades. tlllnaa.

8. A le comprising a core, a series of aper- IOO tured cutting bladesforming the teeth of the file adapted to be fixed in angular relation tothe core, a series of U-shaped deilecting plates inserted atpredetermined points between the blades, locking plates in fixedrelation to the deileoting plates, and means carried by the lockingplates for adjusting the angularity of the defleeting plates and blades.

9. A file comprising a core composed of two triangular members adaptedto transversely slide upon each other to change its dimension, a seriesof apertured cutting blades adapted to be passed over the core and heldin fixed relation thereto in an angular position, and means y associatedwith the blades for regulating their inclination, as described.

10. A iile comprising a core composed of two members substantiallytriangular in cross section, a series of apertured cutting bladesadapted to be passed over the core and held in an angular relationthereto, a plurality of U-shapeddeileoting plates between the blades andastride the core, a locking plate in fixed relation to each deieetingplate, and means carried by the looking plates for adjusting theangularity ofthe defleeting plates. In testimony whereof I have signedmy name to this specification in the presence of two subscribingwitnesses. HENRY GETAZ. Witnesses:

GEO. FULLERTON, i PAUL SUssAN.

